11691442 has 16 divisors (see below), whose sum is σ = 20509632. Its totient is φ = 4893840.

The previous prime is 11691439. The next prime is 11691451. The reversal of 11691442 is 24419611.

11691442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11691442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9109 + ... + 10312.

It is an arithmetic number, because the mean of its divisors is an integer number (1281852).

Almost surely, 2^11691442 is an apocalyptic number.

11691442 is a deficient number, since it is larger than the sum of its proper divisors (8818190).

11691442 is a wasteful number, since it uses less digits than its factorization.

11691442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19473.

The product of its digits is 1728, while the sum is 28.

The square root of 11691442 is about 3419.2750693678. The cubic root of 11691442 is about 226.9635033538.

The spelling of 11691442 in words is "eleven million, six hundred ninety-one thousand, four hundred forty-two".